/*
 * This file Copyright (c) 2015. Walle.
 * (http://www.wallellen.com). All rights reserved.
 *
 *
 * This file is dual-licensed under both the
 * Walle Agreement (WA) and the GNU General Public License.
 * You may elect to use one or the other of these licenses.
 *
 * This file is distributed in the hope that it will be
 * useful, but AS-IS and WITHOUT ANY WARRANTY; without even the
 * implied warranty of MERCHANTABILITY or FITNESS FOR A
 * PARTICULAR PURPOSE, TITLE, or NONINFRINGEMENT.
 * Redistribution, except as permitted by whichever of the GPL
 * or WA you select, is prohibited.
 *
 * 1. For the GPL license (GPL), you can redistribute and/or
 * modify this file under the terms of the GNU General
 * Public License, Version 3, as published by the Free Software
 * Foundation.  You should have received a copy of the GNU
 * General Public License, Version 3 along with this program;
 * if not, write to the Free Software Foundation, Inc., 51
 * Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * 2. For the Walle Agreement (WA), this file
 * and the accompanying materials are made available under the
 * terms of the WA which accompanies this distribution, and
 * is available at http://www.wallellen.com/agreement.html
 *
 *
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER
 */

package com.wallellen.knowledge.know.service.impl;

import com.wallellen.knowledge.know.service.WebDocServiceInter;
import com.wallellen.knowledge.know.util.HttpDocument;
import com.wallellen.knowledge.know.util.HttpResourceHandle;
import org.jsoup.Jsoup;
import org.jsoup.select.Elements;
import org.springframework.stereotype.Service;

import java.io.IOException;
import java.net.URL;

@Service
public class WebDocServiceImpl implements WebDocServiceInter {
    private static final WebDocServiceInter thisObj = new WebDocServiceImpl();

    /**
     * 获得单例对象
     *
     * @return
     */
    public static WebDocServiceInter instance() {
        return thisObj;
    }

    @Override
    public String[] crawlerWebDocTempFileId(URL url, WebDocServiceInter.DOC_TYPE type, HttpResourceHandle handle) throws IOException {
        String contentText = null;
        HttpDocument htmlDoc = HttpDocument.instance(Jsoup.connect(url.toString()));
        contentText = htmlDoc.getDocument().text();
        Elements body = htmlDoc.getDocument().getElementsByTag("body");
        htmlDoc.removeOutContent();
        htmlDoc.rewriteResources(handle);
        return new String[]{contentText, htmlDoc.getTitle(), body.html()};
    }

}
